FEATURES:Bronze Corrosion Resistant Castings•Special Cast Bronze Gears•Stainless Steel Shafts & Fasteners•Formed Ring Seal Packing (Lip & Mechanical Seals •

are available)Heavy Duty Carbon Bearings (Self Lubricating)•Positive Displacement Flow•

DRivE:Either direct drive with flexible coupling or pulley drive can be used. Make sure both flexible coupling halves are properly aligned. When using a pulley, do not overtighten the belt. Also, to absorb belt side thrust at higher pres-sures and larger size pumps, an external ball bearing support is recommended -- consult factory.

LiqUiDS AnD TEmpERATURE:Service life will be increased substantially if the liquid pumped is clean and has some degree of lubricity. These positive displacement pumps have tight tolerances. Fine abrasives like sand, silt, or powders in suspension will accelerate pump wear and reduce throughput.

Liquids compatible with bronze and stainless steel can be pumped providing proper seal has been specified, check with Oberdorfer factory. When possible, flush the pump after each usage.

Temperature extremes are detrimental to service life and should be avoided. Basic metals of construction allow a temperature range of -40° to 400° F Some lip seal elas-tomers have a limit of 212° F. (see engineering data or

Bronze Pedestal Rotary Gear PumpsN9000 Series

pERFoRmAncE:Water, 70° F

check with Oberdorfer factory). Allowing a liquid to freeze in the pump can cause damage.

SUcTion LiFT:Close tolerances and the positive pumping action make the rotary gear pump capable of lifting water on the suc-tion side as high as 20 feet. Though gear pumps are self priming, a foot valve is recommended. If possible, wet the gears with liquid to be pumped for the first dry start. Liq-uid retained in the system and gear chambers serves to “wet” the pump on subsequent starts.

By-pASS AnD RoTATion:The pump by-pass valve is not intended to be a metering or flow control device. Its main purpose is to function as a pressure relief when the desired set point is exceeded, overheating can occur within 5 -10 minutes if the dis-charge line is completely shut off for extended periods.

Reversing rotation reverses the “IN” and “OUT” ports and the location of the by-pass ports have to be reversed.

The by-pass valve is factory set at 50 psi. To increase the setpoint, turn the by-pass valve adjusting screw in a clock-wise direction.

Model N9000 1" NPT Ports

* For pressures over 100 psi, the above selections are suitable for pumping fluids with lubricity (eq. oils, polymers). Service life will decrease for fluids without lubricity (eq. water, solvents).Model N9000R

Item 8 and items 10-17 for the “R” versions only.

Item 23 is only used on N9000S15 pumps.

Item 20 is only used on N9000S18 pumps.

N9000series.082014

Visit www.oberdorferpumps.com to find in-depth descriptions of the world’s leading high-quality, dependable pumps.

Due to ongoing product improvements, data shown here is subject to change without notice. Contact Oberdorfer Pumps for latest specifications.

Bronze Pedestal Rotary Gear PumpsN9000 Series

5900 Firestone Drive, Syracuse, NY 13206Phone:(800)448-1668;(315)437-0361•Fax:(315)463-9561

All Repair Kits contain items 2, 4, 5, 6 and 7

Exploded view and parts List

NBR = Acrylonitrile-Butadiene PTFE = Polytetrafluorethylene FKM = Fluoroelastomer

Dimensions

1 2 3 4 5 6 7 8 9 10Packnut or

Retaining Ring Packing Seal Body Bearing Drive Gear Assy

Idle Gear Assy O-Ring Cover Screw Ball

11 12 13 14 15 16 17 18 19 20 21 22 23Repair

KitPlug Nut Spring Adj. Screw Locknut Bypass

NutO-Ring

LocknutO-Ring Plug

NutDowel

Pin Tag Tag Screw Pipe Plug

Retaining Ring

Lock Ring

Model Qty. 1 Qty. 1 Qty. 1 Qty. 1 Qty. 1 Qty. 2 Qty. 1 Qty. 2 Qty. 1 Qty. 2 Qty. 1 Qty. 1 Qty. 1 N9000 NA NA NA NA NA NA NA 8885 9344 9345 NA NA NA 10641 N9000S3 NA NA NA NA NA NA NA 8885 9344 9345 NA NA NA 11379 N9000S15 NA NA NA NA NA NA NA 8885 9344 9345 NA NA 3033 11195 N9000S16 NA NA NA NA NA NA NA 8885 9344 9345 NA 5382 NA 11970 N9000S17 NA NA NA NA NA NA NA 8885 9344 9345 NA 5382 NA 12103 N9000S18 NA NA NA NA NA NA NA 8885 9344 9345 6052 5382 NA 12225 Relief Value Versions 5278R 5277 5275 1642D 5276 9797-022 9797-019 NA NA NA NA NA NA NA

Model Seal Arrangement Qty. 1 Qty. 2 Qty. 1 Qty. 1 Qty. 4 Qty. 1 Qty. 1 Qty. 1 Qty. 1 Qty. 8 Qty. 1 N9000 Packing 1762 5479 NA 9325NF1N 5091 33019 33020 9797-045 9326NN5N 5385 NA N9000S3 NBR Lip NA NA 5463 9325NF2N 5091 33019 33020 9797-045 9326NN5N 5385 NA N9000S15 FKM Lip NA NA 9997 9325NF2N 5091 33019 33020 9797-045 9326NN5N 5385 NA N9000S16 NBR Bellows Mech. 5374 NA 32202 9375NF9N 5091 33042 33020 9797-045 9326NN5N 5385 NA N9000S17 FKM Bellows Mech. 5374 NA 32235 9375NF9N 5091 33042 33020 9797-045 9326NN5N 5385 NA N9000S18 PTFE Wedge Mech. 5374 NA 32923 9375NF6N 5091 33042 33020 9355-045 9326NN5N 5385 NA Relief Valve Versions: N9000R, N9000RS3, N9000RS15, N9000RS16, N9000RS17, N9000RS18 9327NN5B NA 3292